11881825 has 6 divisors (see below), whose sum is σ = 14733494. Its totient is φ = 9505440.

The previous prime is 11881811. The next prime is 11881829. The reversal of 11881825 is 52818811.

11881825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 16 + 11881809 = 4^2 + 3447^2 .

It is not a de Polignac number, because 11881825 - 2⁷ = 11881697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11881829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 237612 + ... + 237661.

Almost surely, 2^11881825 is an apocalyptic number.

It is an amenable number.

11881825 is a deficient number, since it is larger than the sum of its proper divisors (2851669).

11881825 is an equidigital number, since it uses as much as digits as its factorization.

11881825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475283 (or 475278 counting only the distinct ones).

The product of its digits is 5120, while the sum is 34.

The square root of 11881825 is about 3447.0023208579. The cubic root of 11881825 is about 228.1888312027.

The spelling of 11881825 in words is "eleven million, eight hundred eighty-one thousand, eight hundred twenty-five".